Single-pass flow-through test elucidation of weathering behavior and evaluation of contaminant release models for Hanford tank residual radioactive waste

► Release models were developed for several Hanford tank residual wastes. ► Ca rich precipitates were found to inhibit dissolution of uranium phases. ► Technetium release was modeled using an equilibrium Kd model. ► Chromium release was described using a constant concentration model.